3997504 has 28 divisors (see below), whose sum is σ = 9066784. Its totient is φ = 1713024.

The previous prime is 3997493. The next prime is 3997507. The reversal of 3997504 is 4057993.

It is a tau number, because it is divible by the number of its divisors (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3997507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4014 + ... + 4909.

Almost surely, 2^3997504 is an apocalyptic number.

It is an amenable number.

3997504 is an abundant number, since it is smaller than the sum of its proper divisors (5069280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3997504 is an equidigital number, since it uses as much as digits as its factorization.

3997504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8942 (or 8932 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 3997504 is about 1999.3759026256. The cubic root of 3997504 is about 158.7070803848.

The spelling of 3997504 in words is "three million, nine hundred ninety-seven thousand, five hundred four".